What is the difference between the smallest six digit whole number and the greatest four digit whole number

Areal estate agent earns $32,000 a year plus $1,000 for each apartment he sells. write an equation that shows the relationship between the number of apartments abe sells,n, and the total amount he earns in a year,e. what is the total amount abe would earn from selling 10 apartments in one year

What is the difference between regular convex and concave polygons

If f(x) = x+8 and g(x) = 4x- 3, find (f+g)(x)